Comparing Decimals and Fractions

The Comparing Decimals and Fractions assessment is designed to elicit information about a common misconception that students have when determining whether a decimal and a fraction are equivalent:

● Misconception 1 (M1): Incorrect Direct Substitution

We strongly recommend that you reference the information in the assessment materials document to learn more about this misconception, including how it appears in student work and how to score the pre- and post-assessments.

a detailed sequence of instructions for introducing and administering the pre-assessment with students

● Scoring

an item-by- item explanation of the misconception being elicited, the correct response, how students with the misconception typically respond, and a detailed assessment analysis process including anchor responses across a range of evidence strengths; these sections also include a scoring practice set with explanations that can be used for training and calibrating scorers, samples of student work, and a scoring guide template to use for scoring the assessment

● Sample Student Responses

examples of student responses with notes about connecting evidence in student work to possible misconceptions

● Administering the Post-Assessment

a detailed sequence of instructions for introducing and administering the pre-assessment with students

Related Assessments: Understanding Decimals

Understanding Decimals

Locating Decimals On A Number Line

Understanding Decimals

Comparing Decimals I

Understanding Decimals

Comparing Decimals II

Understanding Decimals

Comparing Decimals and Fractions

Online Administration

The EM2 Project takes full advantage of computer technologies to provide data to teachers quickly and efficiently.

About The Project

A project to develop valid and reliable, short, highly focused diagnostic assessments that are available to educators as paper assessments or through an open-source, online assessment system.

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Education Development Center is a global nonprofit organization with 501(c)(3) status that designs, delivers and evaluates innovative programs to address some of the world’s most urgent challenges in education, health, and economic opportunity.

About Our Funder

This website and research was supported by the IES, U.S. DOE., through Grant 305A110306 to EDC, Inc. The opinions expressed are those of the authors and do no represent views of the IES. or the U.S. DOE.